Coloring process for synthetic textile materials
US4029469A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Oct 8, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/922
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for coloring aromatic polyester textile materials which comprises applying to the said textile material by an aqueous dyeing, padding or printing process an aqueous dispersion of a water-insoluble monoazo dyestuff of the formula:- ##STR1## wherein X is hydrogen or methyl, Y and Z are each independently chlorine or bromine, and R is lower alkyl, and subsequently subjecting the colored textile material to a treatment in an aqueous solution of sodium hydrosulphite whereby the aromatic polyester textile materials are colored in brown shades of excellent fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.